Explanimator: Does infinity exist in the real world?

Infinity: Facts, Mysteries, Paradoxes, and Beyond

People talk about infinity like it’s a confirmed feature of physical reality. Infinite universe. Infinite time. Infinite space. But here is the honest truth, we do not know whether any literal physical infinity exists. We have never measured an infinite energy, an infinite density, or an infinite anything. Infinity shows up constantly in our equations because infinity is a mathematical tool. We use continuous models, take limits, and idealize points and smooth curves. That can produce infinities